I am working with an ADC Lite flown at 100m over a closed canopy forest. There are inherent dark areas in most of the images caused by sun position and taller trees casting shadows on short trees. I haven't found a lot in the literature about correcting this effect or if it actually need to be corrected. Does PhotoScan have a shade or dark object adjustment for these kinds of effects?

Thank you in advance. This forum has been very helpful in the past but this is my first post.

You can largely remove shadows (and highlights) in software such as Photoshop or Lightroom. For this type of work Lightroom is my preferred software since it lets you quickly sample, alter and save large amounts of pictures. Works best if the original pictures are in RAW format. Whether this is strictly 'necessary' depends from dataset to dataset, but to be sure I tend to just preprocess any image sequence in Lightroom for optimal results.